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73780bfe LR |
1 | // Derived from libstdc++/12048 by LJR <ljrittle@acm.org> with |
2 | // reminder from Petur Runolfsson <peturr02@ru.is>. | |
3 | ||
a5544970 | 4 | // Copyright (C) 2003-2019 Free Software Foundation, Inc. |
73780bfe LR |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
73780bfe LR |
10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
73780bfe | 20 | |
4c620c39 PR |
21 | // DR 49 states that cin.rdbuf()->sbumpc() and fgetc(stdin) should be |
22 | // equivalent and interchangable. Currently however, cin.rdbuf()->sungetc() | |
23 | // only returns characters that were read with cin.rdbuf()->sbumpc() | |
24 | ||
25 | // { dg-do run { xfail *-*-* } } | |
13cddbc1 | 26 | // { dg-require-fileio "" } |
4c620c39 | 27 | |
73780bfe | 28 | #include <iostream> |
4c620c39 | 29 | #include <cstdio> |
73780bfe LR |
30 | #include <testsuite_hooks.h> |
31 | ||
32 | void | |
33 | test01() | |
34 | { | |
820d2ff7 | 35 | VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) ); |
73780bfe LR |
36 | |
37 | char c1; | |
4c620c39 PR |
38 | int c2; |
39 | char c3; | |
73780bfe | 40 | std::cin.get(c1); |
4c620c39 | 41 | c2 = std::fgetc(stdin); |
73780bfe | 42 | std::cin.unget(); |
4c620c39 PR |
43 | if (std::cin.good()) |
44 | { | |
45 | std::cin.get(c3); | |
46 | VERIFY( std::cin.good() ); | |
47 | VERIFY( c3 == std::char_traits<char>::to_char_type(c2) ); | |
48 | } | |
73780bfe LR |
49 | } |
50 | ||
51 | int main(void) | |
52 | { | |
53 | test01(); | |
54 | return 0; | |
55 | } |